<template>
	<view>
		<view class="ssk">
			<!-- 返回箭头 -->
			<view @click="backClick">
				<image class="back_jt" src="../../../static/backjiantou.png" ></image>
			</view>
			
			<!-- 输入框 -->
			<view class="searchBox">
				<view class="inputBox">
					<input type="text" :placeholder="defaultKeyword" @input="inputChange" v-model="keyword" @confirm="doSearch(false)"
					 placeholder-class="placeholder-class" confirm-type="search">
				</view>
				<view class="searchBtn" @tap="doSearch(false)">搜索</view>
			</view>
			</view>
			<view class="search-keyword">
				<scroll-view class="keywordListBox" v-show="isShowKeywordList" scroll-y>
					<view class="keywordEntry" hover-class="keywordEntryTap" v-for="row in keywordList" wx:key="row.keyword">
						<view class="keywordText" @tap="doSearch(row.name)">
							<rich-text :nodes="row.htmlStr"></rich-text>
						</view>
						<view class="keywordImg" @tap="setkeyword(row,name)">
							<image src="../../../static/back.png"></image>
						</view>
					</view>
				</scroll-view>
				<scroll-view class="keywordBox" v-show="!isShowKeywordList" scroll-y>
					<view class="keyword-block" v-if="oldKeywordList.length>0">
						<view class="keyword-list-header">
							<view>历史搜索</view>
							<view>
								<image @tap="oldDelete" src="../../../static/delete.png"></image>
							</view>
						</view>
						<view class="keyword">
							<view v-for="key in oldKeywordList" @tap="doSearch(key)" wx:key="key">{{key}}</view>
						</view>
					</view>
					<view class="keyword-block">
						<view class="keyword-list-header">
							<view>热门搜索</view>
							<view>
								<image @tap="hotToggle" :src="'../../../static/attention'+forbid+'.png'"></image>
							</view>
						</view>
						<view class="keyword" v-if="forbid==''">
							<view v-for="key in hotKeywordList" @tap="doSearch(key)" wx:key="key">{{key.first}}</view>
						</view>
						<view class="hideHotTis" v-else>
							<view>当前搜热门搜索已隐藏</view>
						</view>
					</view>
				</scroll-view>
			</view>
		
	</view>
</template>

<script>
	export default {
		data() {
			return {
				keyword:'',
				defaultKeyword: "",
				oldKeywordList: [],
				hotKeywordList: [],
				keywordList  : [],
				forbid: '',
				isShowKeywordList: false
				
			}
		},
		mounted() {
				this.init();
			},
			methods: {
				init() {
					this.loadOldKeyword();
					this.loadHotKeyword();
					this.defaultKeyword = "沈以诚";
				},
				//加载历史搜索
				loadOldKeyword() {
					uni.getStorage({
						key: 'OldKeys',
						success: (res) => {
							var OldKeys = JSON.parse(res.data);
							this.oldKeywordList = OldKeys;
						}
					});
				},
				//加载热门搜索
				loadHotKeyword() {
					uni.request({
						url:"http://localhost:3000/search/hot",
						method:'Post',
						success: (res) => {
							this.hotKeywordList = res.data.result.hots
						}
					})
					 
				},
				//监听输入
				inputChange(event) {
					var keyword = event.detail.value;
					if (!keyword) {
						this.isShowKeywordList = false;
						return;
					}
					this.isShowKeywordList = true;
					uni.request({
						url: 'http://localhost:3000/search/suggest?keywords=' + keyword, //仅为示例
						success: (res) => {
							this.keywordList = this.drawCorrelativeKeyword(res.data.result.songs,keyword);
						}
					});
				},
				//高亮关键字
				drawCorrelativeKeyword: function(keywords, keyword) {
					var len = keywords.length,
						keywordArr = [];
					for (var i = 0; i < len; i++) {
						var row = keywords[i];
						//定义高亮#9f9f9f
						var html = row.name.replace(keyword, "<span style='color: #9f9f9f;'>" + keyword + "</span>");
						html = '<div>' + html + '</div>';
						var tmpObj = {
							keyword: row[0],
							htmlStr: html
						};
						keywordArr.push(tmpObj)
					}
					return keywordArr;
				},
				//顶置关键字
				setkeyword(data) {
					this.keyword = data.keyword;
				},
				//清除历史搜索
				oldDelete() {
					uni.showModal({
						content: '确定清除历史搜索记录？',
						success: (res) => {
							if (res.confirm) {
								console.log('用户点击确定');
								this.oldKeywordList = [];
								uni.removeStorage({
									key: 'OldKeys'
								});
							} else if (res.cancel) {
								console.log('用户点击取消');
							}
						}
					});
				},
				//热门搜索开关
				hotToggle() {
					this.forbid = this.forbid ? '' : '_forbid';
				},
				//执行搜索
				doSearch(key) {
					
					this.saveKeyword(key.first); //保存为历史 
					uni.showToast({
						title: key.first,
						icon: 'none',
						duration: 2000
					});
					//以下是示例跳转淘宝搜索
					
				},
				//保存关键字到历史记录
				saveKeyword(keyword) {
					uni.getStorage({
						key: 'OldKeys',
						success: (res) => {
							var OldKeys = JSON.parse(res.data);
							var findIndex = OldKeys.indexOf(keyword);
							if (findIndex == -1) {
								OldKeys.unshift(keyword);
							} else {
								OldKeys.splice(findIndex, 1);
								OldKeys.unshift(keyword);
							}
							//最多10个纪录
							OldKeys.length > 10 && OldKeys.pop();
							uni.setStorage({
								key: 'OldKeys',
								data: JSON.stringify(OldKeys)
							});
							this.oldKeywordList = OldKeys; //更新历史搜索
						},
						fail: (e) => {
							var OldKeys = [keyword];
							uni.setStorage({
								key: 'OldKeys',
								data: JSON.stringify(OldKeys)
							});
							this.oldKeywordList = OldKeys; //更新历史搜索
						}
					});
				},
				backClick(){
					uni.navigateBack({
						url:'../../../pages/find/find'
					})
						
					
				}
			}
		}
</script>

<style lang="scss">
	.ssk{
		margin:40rpx auto;
		width:700rpx;
		height:110rpx;
		position: relative;
	}
	.back_jt{
		width:50rpx;
		height: 50rpx;
		position: absolute;
		top:30rpx;
		
	}
	.searchBox {
		margin:10rpx auto;
		width: 500rpx;
		padding: 7.5px 2.5%;
		display: flex;
		justify-content: space-between;
	}
	
	.searchBox .inputBox {
		width: 85%;
		flex-shrink: 1;
		display: flex;
		justify-content: center;
		align-items: center;
		border-bottom:1px solid #939393;
	}
	
	.searchBox .searchBtn {
		width: 15%;
		margin: 0 0 0 2%;
		display: flex;
		justify-content: center;
		align-items: center;
		flex-shrink: 0;
		font-size: 14px;
		color: black;
		border-radius: 10rpx;
	}
	
	.searchBox .inputBox>input {
		width: 100%;
		height: 30px;
		font-size: 16px;
		border: 0;
		border-radius: 30px;
		-webkit-appearance: none;
		-moz-appearance: none;
		appearance: none;
		padding: 0 3%;
		margin: 0;
		background-color: #ffffff;
	}
	
	.placeholder-class {
		color: #9e9e9e;
	}
	
	.search-keyword {
		width: 100%;
		background-color: rgb(242, 242, 242);
	}
	
	.keywordListBox {
		height: calc(100vh - 55px);
		padding-top: 5px;
		border-radius: 10px 10px 0 0;
		background-color: #fff;
	}
	
	.keywordEntryTap {
		background-color: #eee;
	}
	
	.keywordEntry {
		width: 94%;
		height: 40px;
		margin: 0 3%;
		font-size: 15px;
		color: #333;
		display: flex;
		justify-content: space-between;
		align-items: center;
		border-bottom: solid 1px #e7e7e7;
	}
	
	.keywordEntry image {
		width: 30px;
		height: 30px;
	}
	
	.keywordEntry .keywordText,
	.keywordEntry .keywordImg {
		height: 40px;
		display: flex;
		align-items: center;
	}
	
	.keywordEntry .keywordText {
		width: 90%;
	}
	
	.keywordEntry .keywordImg {
		width: 10%;
		justify-content: center;
	}
	
	.keywordBox {
		height: calc(100vh - 55px);
		border-radius: 10px 10px 0 0;
		background-color: #fff;
	}
	
	.keywordBox .keyword-block {
		padding: 5px 0;
	}
	
	.keywordBox .keyword-block .keyword-list-header {
		width: 94%;
		padding: 5px 3%;
		font-size: 13.5px;
		color: #333;
		display: flex;
		justify-content: space-between;
	}
	
	.keywordBox .keyword-block .keyword-list-header image {
		width: 20px;
		height: 20px;
	}
	
	.keywordBox .keyword-block .keyword {
		width: 94%;
		padding: 3px 3%;
		display: flex;
		flex-flow: wrap;
		justify-content: flex-start;
	}
	
	.keywordBox .keyword-block .hideHotTis {
		display: flex;
		justify-content: center;
		font-size: 14px;
		color: #6b6b6b;
	}
	
	.keywordBox .keyword-block .keyword>view {
		display: flex;
		justify-content: center;
		align-items: center;
		border-radius: 30px;
		padding: 0 10px;
		margin: 5px 10px 5px 0;
		height: 30px;
		font-size: 14px;
		background-color: rgb(242, 242, 242);
		color: #6b6b6b;
	}
</style>
